night elf's had 2 story's lines i can recall in mop one with some of them trying to refind there immortality which i rather liked and the one where tyrnda the alliances biggest impulsive person gets taunt a less that was long over due. both very well done if you ask me.
the dwarfs were shown to be working on closes the distrust between the clans with moria being willing to put her clan in a bad position to build trust with the other two, again id say very well done and my favorite scenario of mop.
gnomes were shown to be a creditable threat in SoO and not just a push over to the bigger races like the orcs.
the high elf's got a bit of spot light with veressa going to the thunder isle and being rather active though she was a back drop to jiana.
i don't think the goats got any thing or the worgen.
what expan outside of cata has had every race have some sort of development like this? all the races have been around but cata and mop are the only expans where they seem to advance wrath didn't have alot to show on the dwarfs or gnomes and nothing on the night elfs same goes for tbc. wod had nothing to do with any thing and legion has had lesser show cases of most races. them introducing a high king did not stop them from giving the spot light to the other races.
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i would have expected more from the troll's seems odd that they left them hanging.
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i don't think garrosh would be having many party's he didn't like the trolls banes dad tried to kill him and he thinks sylvanas is a bitch. before his evil turn i think he'd only invite the goblins and maybe blood elf's